Based on Percona Server 5.5.37-35.0 including all the bug fixes in it, Galera Replicator 2.10 (including fixes in 2.9 and 2.10 milestones) and on wsrep API 25.10 (including fixes in 25.10), Percona XtraDB Cluster5.5.37-25.10 is now the current stable release. All of Percona‘s software is open-source and free.

Initial configurable timeout, of 100 seconds, to receive a first packet via SST has been implemented, so that if donor dies somewhere in between, joiner doesn’t hang. Timeout can be configured with the sst-initial-timeout variable.

The joiner would wait and not fall back to choosing other potential donor nodes (not listed in wsrep_sst_donor) by their state. This happened even when comma was added at the end. This fixes it for that particular case.

FLUSH TABLES WITH READ LOCK behavior on the same connection was changed to conform to MySQL behavior. Bug fixed #1269085.

Read-only detection has been added in clustercheck, which can be helpful during major upgrades (this is used by xinetd for HAProxy etc.) Bug fixed #1269469.

Binary log directory is now being cleanup as part of the XtraBackup SST. Bug fixed #1273368.

Deadlock would happen when NULL unique key was inserted. Workaround has been implemented to support NULL keys, by using the md5 sum of full row as key value. Bug fixed #1276424.

This release contains almost 100 fixed bugs, complete list of fixed bugs can be found in our release notes.

Please see the 5.5.37-25.10 releases notes for complete details on all of the new features and bug fixes. Help us improve quality by reporting any bugs you encounter using our bug tracking system. As always, thanks for your continued support of Percona!